Improvement in woolen packings



G. TDMLINSON, l. H. K. 8|. T. E. SURRICK.

Wonlen Packings.

mw (E, /WfD/f p aw/m7 //JM/ UNITED STATES PATENT OFFICE.

CURTIS TOMLINSON, JOHN H. K. SORRIOK, AND THOMAS E. SORRICK, OF

AKRON, OHIO. l

IMPROVEMENT l/N WOLEN PAKINGS.

Specification forming partlof Letters Patent No. 151,064, dated May 19, 1874; application filed April 13, 1874.

To all whom it may concern:

Be it known that we, CURTIS TOMLINSON, JOHN H. K. SORRIOK, and THOMAS E. SOR- RICK, of Akron, Summit county, Ohio, have invented an Improved Woolenlacking, of which the following is a specification: u

Our invention relates to that class of packing used around the piston and valve rods of steam-engines, plungers and piston-rods of pumps, and all other places where an air,

steam, or water tight joint is desired around a shaft or rod. Our Objectis to provide greater elasticity and durability, and lessen friction and consequent wear on the sliding parts. To this end we have adopted woolen fabric as the base of the packing, because of its greater elasticity, which prevents it packing into a solid dead mass, as does hemp or cotton, and have protected and supported it by vulcanized rubber. Our invention consists in a hollow cylinder, composed oi'alternatelayers of woolen iabric and rubber, held together with a cement of rubber andbenzine, having a covering and lining of rubber, which are in turn covered and lined, respectively, with a rm woolen cloth.

We construct the cylinder by windin g upon a mandrel a layer of firm woolen cloth, followed by a layer of rubber. Upon this is built up the cylinder of alternate layers, consisting of two or three thicknesses of coarse woolen fabric, followed by a layer of rubber, and when of the proper size a layer of rubber is wound on and covered with the woolen cloth iirst used. All the successive layers, either of filling may be obviated by covering the ends with rubber and cloth in the same manner as the cylinder is lined and covered. Y In the drawing, Figure lis a side elevation, and Fig. 2 a cross-section, in which the rubber, iirin cloth, and coarse fabric are lettered, respectively, A, B, and C.

IVe clai1n g The herein-described packing, consisting of an outside and inside cylindrical shell of vulcanized rubber, covered andlined, respectively,

with rm woolen cloth, the intermediate space 4 being filled by alternate layers, consisting ci' two or three thicknesses of coarse woolen cloth and single thickness of rubber, the wholel v cemented together with rubber cement.

CURTIS TOMLINSON. JOHN H. K. SORRIGK. THOMAS E. SORRIGK. Witnesses JOHN H. CAMPBELL, JOHN F. HOY. 

